
AISI T15 Cobalt Super High-Speed Steel
AISI T15 — Co-W-V super HSS (12 % W, 5 % V, 5 % Co), HRC 66–68. Compare with M42 and ASP2060 for the most abrasive substrates.

AISI T15 — Co-W-V super HSS (12 % W, 5 % V, 5 % Co), HRC 66–68. Compare with M42 and ASP2060 for the most abrasive substrates.